<!DOCTYPE html>
<html>
<head>
  <title>Test page</title>
</head>
<body>
<table>
  <tr>
    <td <warning descr="Obsolete attribute">width</warning>="10px">Some content</td>
  </tr>
</table>
<h2 <warning descr="Obsolete attribute">align</warning>="center">Assignment 1</h2>
<div id="hello" <warning descr="Obsolete attribute">align</warning>="left"></div>
<a <warning descr="Obsolete attribute">charset</warning>="Big5" download="">hello</a>
<img src="http://foo" onError="Big5">
<img src="http://foo" onerror="Big5">
</body>